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    <p>I couldn't find one either. Strange!</p> <p>Luckily, the number of Unicode blocks is quite manageably small.</p> <p>This implementation accepts a one-character Unicode string, just like the functions in <code>unicodedata</code>. If your inputs are mostly ASCII, this linear search might even be faster than binary search using <code>bisect</code> or whatever. If I were submitting this for inclusion in the Python standard library, I'd probably write it as a binary search through an array of statically-initialized <code>struct</code>s in C.</p> <pre><code>def block(ch): ''' Return the Unicode block name for ch, or None if ch has no block. &gt;&gt;&gt; block(u'a') 'Basic Latin' &gt;&gt;&gt; block(unichr(0x0b80)) 'Tamil' &gt;&gt;&gt; block(unichr(0xe0080)) ''' assert isinstance(ch, unicode) and len(ch) == 1, repr(ch) cp = ord(ch) for start, end, name in _blocks: if start &lt;= cp &lt;= end: return name def _initBlocks(text): global _blocks _blocks = [] import re pattern = re.compile(r'([0-9A-F]+)\.\.([0-9A-F]+);\ (\S.*\S)') for line in text.splitlines(): m = pattern.match(line) if m: start, end, name = m.groups() _blocks.append((int(start, 16), int(end, 16), name)) # retrieved from http://unicode.org/Public/UNIDATA/Blocks.txt _initBlocks(''' # Blocks-5.1.0.txt # Date: 2008-03-20, 17:41:00 PDT [KW] # # Unicode Character Database # Copyright (c) 1991-2008 Unicode, Inc. # For terms of use, see http://www.unicode.org/terms_of_use.html # For documentation, see UCD.html # # Note: The casing of block names is not normative. # For example, "Basic Latin" and "BASIC LATIN" are equivalent. # # Format: # Start Code..End Code; Block Name # ================================================ # Note: When comparing block names, casing, whitespace, hyphens, # and underbars are ignored. # For example, "Latin Extended-A" and "latin extended a" are equivalent. # For more information on the comparison of property values, # see UCD.html. # # All code points not explicitly listed for Block # have the value No_Block. # Property: Block # # @missing: 0000..10FFFF; No_Block 0000..007F; Basic Latin 0080..00FF; Latin-1 Supplement 0100..017F; Latin Extended-A 0180..024F; Latin Extended-B 0250..02AF; IPA Extensions 02B0..02FF; Spacing Modifier Letters 0300..036F; Combining Diacritical Marks 0370..03FF; Greek and Coptic 0400..04FF; Cyrillic 0500..052F; Cyrillic Supplement 0530..058F; Armenian 0590..05FF; Hebrew 0600..06FF; Arabic 0700..074F; Syriac 0750..077F; Arabic Supplement 0780..07BF; Thaana 07C0..07FF; NKo 0900..097F; Devanagari 0980..09FF; Bengali 0A00..0A7F; Gurmukhi 0A80..0AFF; Gujarati 0B00..0B7F; Oriya 0B80..0BFF; Tamil 0C00..0C7F; Telugu 0C80..0CFF; Kannada 0D00..0D7F; Malayalam 0D80..0DFF; Sinhala 0E00..0E7F; Thai 0E80..0EFF; Lao 0F00..0FFF; Tibetan 1000..109F; Myanmar 10A0..10FF; Georgian 1100..11FF; Hangul Jamo 1200..137F; Ethiopic 1380..139F; Ethiopic Supplement 13A0..13FF; Cherokee 1400..167F; Unified Canadian Aboriginal Syllabics 1680..169F; Ogham 16A0..16FF; Runic 1700..171F; Tagalog 1720..173F; Hanunoo 1740..175F; Buhid 1760..177F; Tagbanwa 1780..17FF; Khmer 1800..18AF; Mongolian 1900..194F; Limbu 1950..197F; Tai Le 1980..19DF; New Tai Lue 19E0..19FF; Khmer Symbols 1A00..1A1F; Buginese 1B00..1B7F; Balinese 1B80..1BBF; Sundanese 1C00..1C4F; Lepcha 1C50..1C7F; Ol Chiki 1D00..1D7F; Phonetic Extensions 1D80..1DBF; Phonetic Extensions Supplement 1DC0..1DFF; Combining Diacritical Marks Supplement 1E00..1EFF; Latin Extended Additional 1F00..1FFF; Greek Extended 2000..206F; General Punctuation 2070..209F; Superscripts and Subscripts 20A0..20CF; Currency Symbols 20D0..20FF; Combining Diacritical Marks for Symbols 2100..214F; Letterlike Symbols 2150..218F; Number Forms 2190..21FF; Arrows 2200..22FF; Mathematical Operators 2300..23FF; Miscellaneous Technical 2400..243F; Control Pictures 2440..245F; Optical Character Recognition 2460..24FF; Enclosed Alphanumerics 2500..257F; Box Drawing 2580..259F; Block Elements 25A0..25FF; Geometric Shapes 2600..26FF; Miscellaneous Symbols 2700..27BF; Dingbats 27C0..27EF; Miscellaneous Mathematical Symbols-A 27F0..27FF; Supplemental Arrows-A 2800..28FF; Braille Patterns 2900..297F; Supplemental Arrows-B 2980..29FF; Miscellaneous Mathematical Symbols-B 2A00..2AFF; Supplemental Mathematical Operators 2B00..2BFF; Miscellaneous Symbols and Arrows 2C00..2C5F; Glagolitic 2C60..2C7F; Latin Extended-C 2C80..2CFF; Coptic 2D00..2D2F; Georgian Supplement 2D30..2D7F; Tifinagh 2D80..2DDF; Ethiopic Extended 2DE0..2DFF; Cyrillic Extended-A 2E00..2E7F; Supplemental Punctuation 2E80..2EFF; CJK Radicals Supplement 2F00..2FDF; Kangxi Radicals 2FF0..2FFF; Ideographic Description Characters 3000..303F; CJK Symbols and Punctuation 3040..309F; Hiragana 30A0..30FF; Katakana 3100..312F; Bopomofo 3130..318F; Hangul Compatibility Jamo 3190..319F; Kanbun 31A0..31BF; Bopomofo Extended 31C0..31EF; CJK Strokes 31F0..31FF; Katakana Phonetic Extensions 3200..32FF; Enclosed CJK Letters and Months 3300..33FF; CJK Compatibility 3400..4DBF; CJK Unified Ideographs Extension A 4DC0..4DFF; Yijing Hexagram Symbols 4E00..9FFF; CJK Unified Ideographs A000..A48F; Yi Syllables A490..A4CF; Yi Radicals A500..A63F; Vai A640..A69F; Cyrillic Extended-B A700..A71F; Modifier Tone Letters A720..A7FF; Latin Extended-D A800..A82F; Syloti Nagri A840..A87F; Phags-pa A880..A8DF; Saurashtra A900..A92F; Kayah Li A930..A95F; Rejang AA00..AA5F; Cham AC00..D7AF; Hangul Syllables D800..DB7F; High Surrogates DB80..DBFF; High Private Use Surrogates DC00..DFFF; Low Surrogates E000..F8FF; Private Use Area F900..FAFF; CJK Compatibility Ideographs FB00..FB4F; Alphabetic Presentation Forms FB50..FDFF; Arabic Presentation Forms-A FE00..FE0F; Variation Selectors FE10..FE1F; Vertical Forms FE20..FE2F; Combining Half Marks FE30..FE4F; CJK Compatibility Forms FE50..FE6F; Small Form Variants FE70..FEFF; Arabic Presentation Forms-B FF00..FFEF; Halfwidth and Fullwidth Forms FFF0..FFFF; Specials 10000..1007F; Linear B Syllabary 10080..100FF; Linear B Ideograms 10100..1013F; Aegean Numbers 10140..1018F; Ancient Greek Numbers 10190..101CF; Ancient Symbols 101D0..101FF; Phaistos Disc 10280..1029F; Lycian 102A0..102DF; Carian 10300..1032F; Old Italic 10330..1034F; Gothic 10380..1039F; Ugaritic 103A0..103DF; Old Persian 10400..1044F; Deseret 10450..1047F; Shavian 10480..104AF; Osmanya 10800..1083F; Cypriot Syllabary 10900..1091F; Phoenician 10920..1093F; Lydian 10A00..10A5F; Kharoshthi 12000..123FF; Cuneiform 12400..1247F; Cuneiform Numbers and Punctuation 1D000..1D0FF; Byzantine Musical Symbols 1D100..1D1FF; Musical Symbols 1D200..1D24F; Ancient Greek Musical Notation 1D300..1D35F; Tai Xuan Jing Symbols 1D360..1D37F; Counting Rod Numerals 1D400..1D7FF; Mathematical Alphanumeric Symbols 1F000..1F02F; Mahjong Tiles 1F030..1F09F; Domino Tiles 20000..2A6DF; CJK Unified Ideographs Extension B 2F800..2FA1F; CJK Compatibility Ideographs Supplement E0000..E007F; Tags E0100..E01EF; Variation Selectors Supplement F0000..FFFFF; Supplementary Private Use Area-A 100000..10FFFF; Supplementary Private Use Area-B # EOF ''') </code></pre>
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